Rubus occidentalis vs black raspberry

Rubus occidentalis and black raspberry both are nouns.

Word	Noun	Adjective	Verb	Adverb
Rubus occidentalis	Yes	No	No	No
black raspberry	Yes	No	No	No

As nouns, Rubus occidentalis and black raspberry are synonyms defined as:

Rubus occidentalis and black raspberry: raspberry native to eastern North America having black thimble-shaped fruit

Other synonyms of Rubus occidentalis include blackcap, blackcap raspberry, thimbleberry.

Rubus occidentalis (noun)	black raspberry (noun)
raspberry native to eastern North America having black thimble-shaped fruit	raspberry native to eastern North America having black thimble-shaped fruit